Infection Control for COVID-19 Imaging
By STEPHEN BORSTELMANN, MD Occasionally, you get handed a question you know little about, but it’s clear you need to know more. Like most of us these days, I was chatting with my colleagues about the novel coronavirus. It goes by several names: SARS-CoV-2, 2019-nCoV or COVID-19 but I’ll just call it COVID. Declared a pandemic on March 12, 2020 by the World Health Organization (WHO), COVID is diagnosed by laboratory test – PCR. The early PCR test used in Wuhan was apparently low sensitivity (30-60%), lengthy to run (days), and in short supply. As CT scanning was relatively available, it became an important diagnostic tool for suspected COVID cases in Wuhan. The prospect of scanning thousands of contagious patients was daunting, with many radiologists arguing back and forth about its appropriateness. As the pandemic has evolved, we now have better and faster PCR tests and most radiologists do not believe that CT scanning has a role for diagnosis of COVID, but rather should be reserved for its complications. Part of the reason is the concern of transmission of COVID to other patients or healthcare workers via the radiology department. But then someone asked: “After you have scanned a patient for COVID, how long will the room be down?” And nobody really could answer – I certainly couldn’t. A recent white paper put forth by radiology leaders suggested anywhere from 30 minutes to three hours. A ...
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